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    "148388-21904175":
    {
        "datetime_modified":"20260903T145225",
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        "date_start":"2026-09-11",
        "date_end":"2026-09-11",
        "time_start":"15:00:00",
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        "time_zone":"America\/Detroit",
        "event_title":"Type C multiline queues and the open-boundary TASEP",
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        "combined_title":"Type C multiline queues and the open-boundary TASEP: Olya Mandelshtam (Waterloo)",
        "event_subtitle":"Olya Mandelshtam (Waterloo)",
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        "event_type_id":"21",
        "description":"The multispecies TASEP on a circle is a particle model whose partition function is connected to Macdonald polynomials at t=0. Multiline queues were introduced by Ferrari and Martin (2007) to compute the stationary distribution of the TASEP on a circle. Their construction admits a natural interpretation in terms of tensor products of Kirillov\u2013Reshetikhin crystals of affine type A, and a map from these tensor products to TASEP states is given by crystal-theoretic operations. We show that there is a natural Markov chain on the crystal that projects to the TASEP via this map.\nThe multispecies open boundary TASEP can be viewed as a type C analogue, with its partition function connected to Koornwinder polynomials at t=0. However, computing its stationary distribution beyond rank 1 has remained a longstanding open problem. Using Kirillov\u2013Reshetikhin crystals of affine type C, we construct type C multiline queues and a corresponding Ferrari\u2013Martin pairing algorithm, and show the crystal likewise admits a Markov chain that projects to the TASEP. Our construction is a combinatorial interpretation of the virtualization map for Kashiwara\u2013Nakashima columns. We thus obtain a crystal-theoretic formula for the stationary distribution of the multispecies open boundary TASEP at the specialization alpha=beta=1. This is joint work with Jeronimo Valencia Porras.",
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        "tags":["Mathematics"],
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        "sponsors":[
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                "group_name":"Combinatorics Seminar - Department of Mathematics",
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    {
        "datetime_modified":"20260910T062104",
        "datetime_start":"20260911T153000",
        "datetime_end":"20260911T163000",
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        "date_start":"2026-09-11",
        "date_end":"2026-09-11",
        "time_start":"15:30:00",
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        "time_zone":"America\/Detroit",
        "event_title":"Markley (2026-2027) (Housing)",
        "occurrence_title":"Where In The World?",
        "combined_title":"Markley (2026-2027) (Housing): Multiple conference events and sessions: Where In The World?",
        "event_subtitle":"Multiple conference events and sessions",
        "event_type":"Conference \/ Symposium",
        "event_type_id":"5",
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                "guid":"150757-21911431@events.umich.edu",
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        "tags":["Sessions"],
        "website":"https:\/\/sessions.studentlife.umich.edu\/p\/track\/17098",
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